How to Wish Merry Christmas and a Happy New Year in Russian

Did you know that we use the Instrumental case to wish your relatives, friends and colleagues Merry Christmas and a Happy New Year?

For example,

С Новым годом и Рождеством!

We also say С наступающим! (literally: Happy coming New Year!)

A quite common greating is C Новым годом, с новым счастьем! (literally: Happy New Year and new happiness!)